With all the drama with TSM dyno posting I retract my previous statement.

hahahahahahaha

E85, a somewhat generous correction factor... it's definitely making some serious power relative to any other N/A builds that I am aware of, but hitting 400 even with cold weather and a generous CF, ehhh... I wouldn't hold your breath.

On that note, has anyone put higher CR pistons in one of these blocks and run 100+ AKI? Dry sump or stouter oil pump to handle higher revs?

That would make for a high-strung engine, but it would put down some decent power before it kerploded :icon17:

JWT engines used in the CTSCC should go close

There is canuck shop with a high comp full na hr head 3.7 block that is over 400 using jwt c13's? full headers and itb's

Edit:its the same guy megan370 talks about, I just forget the name of the shop

Sasha Anis

350z : OnPoint Dyno

More Engine Development – 414whp with Kels *Video* : OnPoint Dyno

This is what is required to get 414rwHP .... anyone who thinks they will get 400 with bog-stock VQ37VHR engine is relying upon an over optimistic dyno to give them the number IMHO.

I Saw that video. That Z is badass. Until more research on tuning the VVel, you can't say people are over optimistic, it is those who think outside the box that come up with the some of greatest ideas. I just want to know how far can the vvel motor can be pushed before BOOM! I think it is close to 400whp. Sure you can go through the hassle and put HR heads, an aggressive cam, itb's and spend countless hours in unchartered territory and make 400whp not knocking Kels video I'd take that Z any day. Bone stock Z all the bolt ons,Porting intakes, up-grade fuel and oil systems, Exhaust cam, and a engine management. Spend countless weeks or months trying every possible tune you can think of and input of other tuners around. I'm pretty sure the new VQ motor can reach or come close to making that magicial mark. 20 years ago people laughed at 4cyl cars at the track, and let alone that motor ever! being capable of running low 6's in the 1320. It just takes time my friend.

Another internet optimist ..........

Power is torque times revs .... the NA VQ can make serious power at high revs, but the OEM bottome end fasterners will not cut the mustard with big revs (eg: >7500) nor will the OEM oil pump.

So, to get more power at 7500 Vmax engine speed you need more lift and greater duration. VVEL might give you 12mm - 13mm at best and that implies you tighten the piston to valve clearances beyond safety.

If this is purely a theortical exercise and engine logevity is simpy not a consideration, the get your tuner to plug max lift into the VVEL, ognore safety margins and rev the engine to 9000 rpm

You;ll get ~400whp. The engine will die shrtly thereafter as a consequence of:
1. Damage from oil-pump failure
2. Damage from piston to valve interference clearance issues becuase the OEM valve springs cannot sustain the rev or because exceeding the VVEL max lift eliminated valve clearance
3. Rod bolts let go

So yes, in theory, you might get 400wHp for long enough to register on the (Optimistic) dyno - but you;ll kill the engine.

Any other option calls for the engine to be opened up and the relevant parts replaced to help the engine live at the rpm required to let it live for more than a few second (or minutes) ....

It's not that I am not a believer, but that I am realist - I have funded the build of dozens of race engines and funded the research that delivers reliable race horsepower, so my comments are based on hard-earned knowledge.

You need good airflow and compression (or boost) to make good torque and you need rev's to make horsepower. The limits in the OEM VQ preclude 450-470 Hp at the crank which is what you need to 400rwHp.

If you still believe in the tooth fairy or a magic pudding - be my guest, but I'm done here.

Dude, there is no way in hell you will ever see 400whp out of a stock motor on pump gas. Period. Not happening. Ever. VVEL isn't magic. People are tuning it right now. Either explain what information (not opinions) you have that leads you to believe that the motor can produce ~450chp or start planning a build that can actually happen.

Look at it this way- you're not the first person to have this idea. No one has succeeded. Either throw 15k+ at a motor build to maybe get 400whp or do something proven to work and go FI.

@ BGTV8 thanks for the insight. That was the information I was looking for, not everyone telling throw 15K and do F.I. and you can never achieve that power etc..... Thank you. @ Chuck33079 guess I'll just have to throw that money into the motor, I just love the sound of an all motor engine making decent power.

Cheers to everyone input though!

Yeah I started to look into building a 400 hp VQ. Way too many limitations with VQ heads. And stockish VQ internals aren't up to RPMs you'd need to turn to get to 400. No reasonable way to get there on pump gas in my opinion.

Not an easy road to 400 plus but the HR head race motors are mostly all cranking out over 400. Just takes a lot of work from internals, to cooling and oiling systems, to intakes, to exhaust and engine controls.

And ultimately that 400 hp NA isn't going to be too street friendly

Think low pressure forced induction is way to go for a street car.

On that note, did anyone ever develop a roots or twin-screw blower for this motor? I thought there was one for the G37, but I've never been able to track it down -- possibly a one off.

I know the lack of standard throttle plates is supposed to be the main problem, but I don't wee why a clutch type engagement wouldn't get around that.

Massive low speed torque off idle with a table top like curve and a somewhat more modest top end would make for a fantastic street friendly beast.

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cool article on the VQ motor on what it would take to reach 400hp on the VQ motor.

P.S. once in the website, while its loading hit the stop button or it will take you to an ebony hair product website

Bringing back this old thread. Producing 400 N/A whp on a stock block isn't to far fetched after all. With my original thought of keeping the cost under 10K isn't possible with all of custom or 1 0ff parts having to be purchased. Thanks to 1slow370z for pushing the envelope, guess time will tell how far the stock block. Lets see if the motor can spin 9,000 RPM's and make 400whp.